Regensburg 2004 – wissenschaftliches Programm

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DS: Dünne Schichten

DS 12: Schichteigenschaften II

DS 12.2: Vortrag

Mittwoch, 10. März 2004, 15:30–15:45, HS 31

Transporteigenschaften ultradünner Metallfilme — •Peter Zahn¹, Dimitry Fedorov^1,2, and Ingrid Mertig¹ — ¹Fachbereich Physik, Martin-Luther-Universität Halle, Deutschland — ²Physical-Technical Institute, Ural Branch of Russian Academy of Sciences, Izhevsk, Russia

Experimental investigations of optical and transport properties of ultrathin metallic layers gave evidence that quantum size effects, caused by the reduced thickness, strongly influence macroscopic properties and transport coefficients. A KKR Green’s function formalism was used to determine the electronic structure of ultrathin metallic films ab initio. In addition, the perturbation induced by point defects was determined self consistently solving a Dyson equation for the Greens function of the system including defects. The anisotropy of the scattering was involved by solving the Boltzmann equation including the vertex corrections and the scattering probability amplitudes derived from the potential perturbation caused by the defects.

We discuss the influence of the reduced symmetry of the films and the position and type of defects in the layers on the electronic structure and transport coefficients. First results for Fe films with thicknesses of one to 32 monolayers will be presented.